Valve guide



A ril 8, 1930. G. H. BRUTSCHER VALVE GUIDE F'iled May 31, 1929 l atented Apr. 8, 1930 UNITED STATES PATENT OFFICE VALVE GUIDE Application filed May 31, 1929. Serial No. 367,517.

My present invention hasreference to a guide for the stems of valves employed in the latest type of Ford by automobile makers, the object of the invention being the provision of a guide for this purpose designed for temporary use when the ordinary guide is removed incident to the removal of the' spring which holds the same in position and which holds the valve normally closed, when the grinding of the valve is required.

A further object is the provision of a detachable guide designed for temporary use during the grinding of an automobile motor valve which shall be of an extremely simple construction, cheaply manufactured and marketed, easily applied and as readily removed after the valve has been ground on its seat.

To the attainment of the foregoing and other objects which will present themselves as the nature of the invention is better understood, the improvement also consists in the construction, combination and operative association of parts hereinafter described and definitely claimed.

In the drawings:

Figure 1 is a fragmentary sectional view through a suflicient portion-of an automobile motor to illustrate the application of my improvement thereon.

Figure 2 is a transverse sectional view approximately on the line 22 of Figure 1.

Figure 3 is a sectional view on the line 33 of Figure 1.

Figure 4 is a rear elevation of the improvement.

Figure 5 is a front elevation thereof.

Figure 6 is aside elevation thereof.

Figure 7 is a top plan view thereof.

As is well known in the art the type A of the new Ford motors has the stem of its valves, at the lower end thereof formed with mushroom heads which, of course, are not movable through the guides for the stems.

The guides for the valve stems comprises each a tubular member which is constructed in sections so that the same can be readily received in the rounded opening 1 that provides the seat therefor in the portion 2 of the motor 59 casting. The guide seat opening 1 is arranged directly below the seat for the valve 3, and the stem 4 passes through this opening. The stem has its lower end provided with the mushroom head 5. Ordinarily the opening 2 has arranged therein a tubular two-part 5 guide for the stem 4, and, of course, the valve is influenced against its seat by the usual spring which also tends to hold the guide positioned. Obviously the spring must be removed for the grinding of the valve and the 60 removal of the spring permits the guide gravitating through the opening 1. The opening 1 being of a materially greater area than the cross sectional diameter of the stem 4: will permit of the wobbling of the valve in the grinding thereof were not some means such as an auxiliary and removable guide provided and such guide forms the subject matter of this application.

As disclosed by the drawings my improved temporary or auril ary guide is in the nature of a tube but the comprises two substantially scmi-cylindr .11 sections 6, respectively. These sections are hingedlyconnected at one of their confronting edges, as indicated by the numeral 7. Preferably the sections 6 a are less than a semi-circle and the said section 6, when brought together are designed to be snugly received in the opening 1. Each of the sections, adjacent to what I will term the lower end thereof, has secured thereto the end portions of the arms of a U-shaped spring 8. The spring tends to force the sections to open position as best disclosed by Figure 7 of the drawings, so that the guide sleeve may re- I ceive the valve stem 4 in the bore thereof. A pressure against the arms of the spring 8 will force the sections 6 toward each other. The sections 6 have their upper ends lapped, as at 9, so that the same will be freely guided through the opening 1 in the casting 2 and when pressure upon this spring is released the sections will have a tendency to move away from each other and be brought into tight and frictional engagement with the wall provided by the opening 1. By this simple means it will be noted that the valve stem is suitaably guided when the valve is to be ground on its seat, and obviously the improvement may be readily removed from the casting and from the valve stem when the valve is ground and when the parts are to be reassembled.

Having described the invention, I claim:

1. A means for providing a temporary Iguide for a valve stem when the valve is to e ground on its seat, and wherein the valve passes through an opening below the valve seat, said means comprising a tubular sleeve constructed of two substantially semi-cylindrical sections which are hingedly connected at one of their confronting edges and which have their upper ends flared inwardly to permit of the same receiving the valve stem therein and the'said sleeve being inserted through the mentioned opening and means connected with. the sleeve sections and tending to force the same away from each other and into ti ht frictional engagement with the wall provided by the openlng.

2. A means for providing a temporary guide for a valve stem when the valve is to be ground on its seat, and wherein the valve passes through an opening below the valve seat, said means coinprising a tubular sleeve constructed of two substantiall semi-cylindrical sections which are hinge ly connected at one of their fronting edges and which have their upper ends flared inwardly to permit of the same receiving the valve stem therein and the said sleeve beinginsertedthroughthe mentioned opening and an arched spring having its ends fixed to the respective sleeve sections designed to swing the said sections to open position for permittin the free insertion of the valve stem there etween and for likewise causing the'sleeve sections to exert a frictional engagement against the wall provided by the said opening for holding the sleeve in the opening.

In testimony whereof I affix my signature.

GEORGE H. BRUTSCHER. 

